The mattress requirements of side-sleepers are different in a number of ways from the needs of back- and stomach-sleepers.
The most important difference is that sleeping on your side creates sharper body angles and deeper pressure points that the surface of a mattress must contend with. This is why side-sleepers need more compliant surfaces that also provide excellent support without ‘bottoming-out’.
Side sleepers are also more likely to move around at night as they switch positions, so motion transfer can become an issue when two partners share the bed.
In this Best Mattress Guide, we’ve used these requirements to select the best online mattresses for side sleepers in six different categories: